Yakuza next game will have zombies

I never played a Yakuza game but i am going to play soon enough well the Yakuza 3 was realese on March 12, 2010 and they already doing another i am not complaining but i think is to soon but anyway the game look like its not going to be bad if it is like Yakuza 3 heres the Trailer from Tokyo Game Show 2010: